Improvement in shutter-hinges



l as to bevel outwardly from the surface of the PATENT OFFICE.,

O. S. GARBETSON, OF

IMPROVEMENT IN BUFFALO, NEW/ YORK.

SHUTTER-HINGES.v

Specilication forming part of Letters Patent No. 55,6441, dated June 19,1861i.

To all whom t may concern :V

Be it known that l, O. S. GARRETSON, of the city of Buffalo, in thecounty of Erie and State of New York, have invented a new and usefulImprovement in the Mode of Construct` ing Butts or Hinges for Blinds,Shutters, 85e., and I do hereby declare that the following is a full andexact description thereof, reference being' had to the accompanyingdrawings, making part of this speeiiication, in which- Figure l is aView, in elevation, of lny improved butt, showing the blind as thrownopen to represent the interior faces, or those which close together.Fig. 2 is a like elevation from the reverse view, showing the exteriorof the butt when opened. Fig. 3 is a detached perspective view of thelocking-bar H. Fig. 4 is a horizontal section through the wings of thebutt when closed.

Like letters of reference indicate corresponding parts in all thefigures.

My invention belongs to that class of butts which are self-fastening'when the blind or shutter is thrown open; and it consists in the methodof constructing and applying the fastening-bar H and of the contiguousfaces of the wings B D, to admit of the required movement of saidfastening-bar without removing or recessing any part of the wingstherefor, and also in the manner of forming the several parts so as toadmit of molding and casting them complete, so as to dispense with thedrilling of holes, as is ordinarily required.

As represented in the drawings, A is the windowframe, to which thefemale part B of the hinge is attached, and C is the shutter, having themale portion D attached thereto, in the ordinary manner. The pin or axisof the parts D and B is fixed in the former and turns freely in thelatter, as indicated by dotted lines in Figs. l and 2. H is thefastening-bar, and consists of a flat piece of metal provided with athumb-piece of any suitable form at its lower extremity, and with aboss, c, at the upper end and opposite side, which tits a correspondingrecess, j', in the wing D of the butt. This boss is preferably so formedbar in order that it may not readil fall out of its socket j', which iscorrespondingly shaped to iit it, or it may be formed with a small head,

flange, or hook, and produce an equivalent effect. It is also providedwith a lip or hook, g, which clasps the lower edge of the wing l), andprevents the bar H from heilig' removed unless the two win gs of thebutt are separated, which can only be done, when in use, by unhangingthe shutter. A portion of the lower edge of the wing forms the arc of acircle of which the boss c is the axis, to admit of the motion requiredby the bar in its operation. The knuckle of the female portion B isprovided with a small cam, 7L, (shown most clearly in Fig. 4,) theoffice of which will be hereinafter described.

Vhen the blind or shutter is hung and closed, the bar H hangs suspendedloosely between the two wings, as shown in dotted lines in Fig. 4, whereit is concealed from observa-- tion, except that portion whichconstitutes the thumb-piece. As the blind is opened the lower end of thebar is moved outward by the projection of the cam 7L until fully open,when it, having passed the point of the cam, falls by its own weightback to its former positionviz., perpendicular with the bearing c. Inthis position it has locked the blind open, which can only be closed bypushing the lower end of H outward far enough to repass the point of thecam li. The range of motion of the swinging end of this bar is slight,being only enough to overcome the projection of the cam, which need beno greater than is suflicient to form a reliable connection. lts motionis with the plane or face of the butt-wings, so that it is not requiredto project far enough to be in the way, or he liable to be broken orforced off, or become unsightly 5 but its most important advantages areits chea-pness and durability. Being formed of a single piece which iscast entire and requires no drilling or other fitting, there is no rivetto rust out or become tight in the joint, so as to be inoperative froman accumulation of rust, and its cost is merely that of the weight ofthe metal which it contains.

In the manufacture of cast-iron goods of this class it is important toavoid drilling and riveting to the greatest extent possible, as itgreatly cheapens the cost and saves the losses which occur from breakingin the operation, while for outdoor uses castiron endures the Weatherwith less injury from oxidation than wrought-iron. I therefore form allparts of my improved butt so that they can be molded and cast complete.The wings being neeessarily angular in their horizontal section, asshown in Fig. 4, present serious difficulties; but by making thelock-bar H move with the general plane of the wings I avoid the necessit-y of any deep recesses, which could not be east, and also form thescrew-holes of such an angle that the pattern will draw,77 as appearsfrom Fig. 4, where the arrow and red lines indicate the line anddirection of the draft in molding the pattern.

The curved or slightly concave faces of the two wings afford space forthe motion of thc locking-bar, while they render the appearance of thebutt more eomely and symmetrical.

I do not claim, broadly, a gravitating bar or lever for locking butts,such being a common device in mechanics, and in general use for this andsimilar purposes; but

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The locking-bar H, in combination with the parts B and D of a hinge,constructed and operating substantially as shown and described.

2. Forming the Wings B D with concave faces, in combination with thependent bar H, when said bar moves on a plane with the wings,substantially and for the purposes set forth.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

O. S. GARRETSON.

Witnesses:

JAY HYATT, LYMAN I. PERKINs.

